2011 Headway calculation

[kball]

Hello again,
I am attaching my second attempt at the signalling the layout calculations for module 2 2011.

I would especially like PJWs comments on this, as I clearly hadn't thought it through on the first attempt.

I am still unsure if I have the 4 aspect headway right, but at least this time I have the logic the right way around.
I hope that my answer is clear enough to follow.

I have still showed the braking distances for all the trains listed, as the question does ask for the braking distances for the permissible speeds. I took this to mean all the trains listed.

I appreciate that my answer is on the long side, and would take up too much time in the exam, but my aim is to get it right first, then try fitting it into the time allowed.

Thanks
KJB